Stay hydrated. Water, juice, clear broth or warm lemon water with honey helps loosen congestion and prevents dehydration.
Rest. Your body needs rest to heal.
Try rubbing Vick cream or inhaling it.
Inspiration: natural process of drawing air into the lungs.
Always say no never consume anything that you are not sure of what the substance is and in this situation just don't go you can never be to safe at least that's what I would do anyway